TOKYO (Reuters) - A consortium led by Bain Capital has made a revised last-ditch offer for Toshiba Corp's chip unit worth about $18 billion, bringing in Apple Inc to help bolster its bid, sources with direct knowledge of the matter said.

TOKYO (Reuters) - A consortium led by Bain Capital has made a revised last-ditch offer for Toshiba Corp's chip unit worth about $18 billion, bringing in Apple Inc to help bolster its bid, sources with direct knowledge of the matter said.